ELECTRIC DEIONIZER - KURITA WATER IND LTD

Title:

ELECTRIC DEIONIZER

Document Type and Number:

WIPO Patent Application WO/2004/002898

Kind Code:

A1

Abstract:

An electric deionizer capable of running a necessary amount of current even a voltage applied between electrodes is lowered to ensure a sufficient deionization. One each of a first cation exchange membrane (3), an anion exchange membrane (4), and a second cation exchange membrane (3’) are disposed between a cathode (1) and an anode (2), and a concentration chamber/cathode chamber (5), a desalting chamber (7), a concentration chamber (10) and an anode chamber (6) are sequentially formed between the cathode (1) and the anode (2). The concentration chamber/cathode chamber (5) and the anode chamber (6) are respectively filled with cation exchange resin (8). The desalting chamber (7) is filled with a mixture of cation exchange resin (8) and anion exchange resin (9). Raw water or deionixed water is led into the anode chamber (6), from which outflow water flows sequentially through the concentration chamber (10) and the concentration chamber/cathode chamber (5).

Inventors:

MIWA MASAYUKI (JP)
SATO SHIN (JP)
MORIBE TAKAYUKI (JP)

Application Number:

PCT/JP2003/007972

Publication Date:

January 08, 2004

Filing Date:

June 24, 2003

Export Citation:

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Assignee:

KURITA WATER IND LTD (JP)
MIWA MASAYUKI (JP)
SATO SHIN (JP)
MORIBE TAKAYUKI (JP)

International Classes:

B01D61/46; B01D61/48; B01D61/50; B01D61/52; B01J47/08; C02F1/469; (IPC1-7): C02F1/469; B01D61/48; B01D61/50

Domestic Patent References:

WO1998011987A1

1998-03-26

Foreign References:

JP2002136971A	2002-05-14
JP2002011475A	2002-01-15
EP1068901A2	2001-01-17
JP2001113280A	2001-04-24
EP1075868A2	2001-02-14
JP2001113279A	2001-04-24
JP2002210473A	2002-07-30
JP2003126862A	2003-05-07
US5593563A	1997-01-14

Other References: